text: import square
  import pygame
  
  
  class Rock(pygame.sprite.Sprite):
  
      def __init__(self, x, y, window):
          super(Rock, self).__init__()
          self.x = x
          self.y = y
          self.background = pygame.image.load("./resources/rock.png").convert()
          self.rect = pygame.Rect(x, y, 40, 40)
          window.blit(self.background, (x, y))
  